Fdk Corporation

Tsukasa Mano

Ryuji Ito

Yuya Iida

Daisuke Hirata

Naoaki Nishimura

Akihiro Yamamoto

Takayuki Kumagai

Yasuaki Egawa

Yorinobu Murata

Manabu Yasuno

Go Taniyama

A laminated rechargeable element includes a jacket and an electrode assembly. The electrode assembly is accommodated in the jacket together with an electrolyte, and includes a separator, a sheet-shaped positive electrode and a sheet-shaped negative electrode. The electrode assembly is formed by laminating the positive electrode and the negative electrode with the separator interposed between the positive electrode and the negative electrode. The separator includes an ion-permeable substrate and ion-permeable bonding layers formed on a top surface and a bottom surface of the substrate. The positive electrode and the negative electrode are welded to respective bonding layers of the separator. The jacket is formed of two flat, rectangular stainless steel laminate films welding together at their peripheries, and is welded to the electrode assembly.

Laminated rechargeable element

A laminated power storage element includes: an exterior body shaped into a flat bag shape by laminating a pair of laminated films to weld a peripheral edge region; an electrode body sealed within the exterior body; a positive and a negative electrode terminal portion allowed to project outside the exterior body from a predetermined margin of the exterior body; and a pair of tab films welded on surfaces where the pair of laminated films oppose one another in a region along the predetermined margin to mutually weld the pair of laminated films, and the tab film covers an end surface of the laminated film while deviating outward from the exterior body from the predetermined margin, and covers both front and back surfaces of each of a base end of the positive electrode terminal portion and a base end of the negative electrode terminal portion.

Method of manufacturing a laminated power storage element

A laminate-type power storage element has a flat body and an interior layered flat plate-shaped electrode body. A positive electrode terminal plate is mounted to a positive electrode of the electrode body and is guided outside from a predetermined margin of the body. A negative electrode terminal plate is mounted to a negative electrode of the electrode body and guided in the same direction. A film member spans across both electrode terminal plates. The film member is made by layering an insulating heat-resistant film and an adhesive to thermocompression bond the heat-resistant film to a matter to be adhered to. The film member is thermocompression bonded to the electrode terminal plate at a region facing principal surfaces of the positive and the negative plates, and is thermocompression bondable to the matter to be adhered to in a region that does not face the respective principal surfaces.

Laminate-type power storage element and method of implementing the same

A laminate-type power storage element, including an exterior body that is formed in a flat bag shape, and an electrode body that has a sheet-shaped positive electrode and a sheet-shaped negative electrode layered via a separator and that is sealed inside the exterior body together with an electrolytic solution, wherein electrode terminal plates of the positive electrode and the negative electrode are guided in an identical direction from a predetermined margin of the exterior body to an outside of the exterior body, and a support part that is made with a film shaped resin having insulating and heat-resistant properties is formed on principal surface sides of the electrode terminal plates at a region that is along the predetermined margin and covers up to tip ends of the electrode terminal plates.

Laminate-type power storage element and manufacturing method thereof

A laminated lithium primary battery is provided which can prevent battery life deterioration caused by moisture penetration from outside and in which safety and increase of battery capacity both can be realized. A lithium primary battery, including: a sheet-like negative electrodemade of lithium; a sheet-like positive electrode; a sheet-like separatormade of cellulose; non-aqueous organic electrolytic solution; a jacketmade of laminate films (and), an inside of the jacket is sealed by heat-sealing periphery of the laminate film stacked in an up-and-down direction; and an electrode assemblyin which the positive electrodeand the negative electrodeare stacked in the up-and-down direction having the separatortherebetween, the sealed jacketaccommodating the electrode assembly with the non-aqueous organic electrolytic solution.

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Tokyo, Japan

Tsukasa Mano